Implement saturated likelihood test for projections#127
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davidwalter2 wants to merge 3 commits intoWMass:mainfrom
Open
Implement saturated likelihood test for projections#127davidwalter2 wants to merge 3 commits intoWMass:mainfrom
davidwalter2 wants to merge 3 commits intoWMass:mainfrom
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This is done using poi models where an unconstrained parameter is assigned for each bin in the projection. The fit is repeated and the saturated likelihoods of both fits is compared to extract a chi-squared distributed value and its probability.
To be able to use it along other poi models I've created the CompositePOIModel class to compose multiple POI models. I've also added an init_fit_parms function to re-use the fitter object with a modified model